Rusan Picatinny rail - Browning BAR / Benelli Argo Details

Introduction

Picatinny rail consists of slots with 5.23 mm spaces between one another, which means that it can be used across its entire length. It is simple to mount and interchangeable – if something is made for a Picatinny rail, it will fit regardless of the manufacturer or manufacturing date. It is affordable, resilient and reliable – this is why it so commonly used by professionals and military. Because of all its great qualities, Picatinny rail has been dominating the rail market in the recent years.

Picatinny is a big step forward from the Weaver standard. Weaver has a few predesignated slots while Picatinny has slots all over its surface, allowing the device to be mounted wherever the user finds it fitting. Weaver's slot is 3.8 mm wide, which is why all mounts made for Picatinny will also fit on a Weaver rail while those made for Weaver will not fit on a Picatinny rail. This is one of the main reasons why Picatinny is a far better mounting solution.

Rusan, a company from Croatia, is one of the manufacturers of Picatinny rails. They make mounts exclusively from steel and provide buyers with a wide selection of Picatinny rails for various rifles. They are made from high quality deep blue finish steel. Picatinny Rails include screws with appropriate thread for the corresponding rifle. Rusan covers 10 years of warranty for all its products.

About the rifle

Browning Arms Company is a manufacturer of firearms and fishing gear with headquarters in America. They offer a wide selection of firearms and are most known for the following firearms: BPS shotgun, A-bolt rifle, X-bolt rifle, BAR semi-automatic rifle and Auto-5 semi-automatic shotgun.

Browning BAR is a well-known, semi-automatic autoloader, developed in 1966 – it should not be mistaken with famous M1918 Browning Automatic rifle known simply as BAR which was used during World War I. It features an extra-strong bolt that locks directly into the barrel. Its action is made of an alloy of high quality which allows it to handle magnum calibers as well. The action is cylindrical and of the same diameter throughout its entire length. Its gas-system (BAR uses gas pressure to power its repeating mechanism), combined with a 7-lug rotary bolt, reduces recoil and adds to the accuracy. BAR was originally chambered for .243 Win., .270 Win., .308 Win. and .30-06 Sprg. BAR series was expanded with Magnum Auto Rifle (magnum version) in 1968 which was chambered for 7 mm Rem. Mag., .300 Win. Mag. and .338 Win. Mag. In 1993, Bar II was introduced. Bar I and Bar II are identical rifles – mounts that fit Bar I will also fit Bar II.The gas pressure-operated repeater was improved on Bar II and it featured a recoil limiter. Many versions were made (Affut 22, Affut 24, Affut-Boss, Safari, Lightweight, Lightweight Magnum, Light Battue Prima, Evolve etc.). Here are some calibers that they are chambered for (but it also depends on the model): .243 Win., .270 Win., .280 Rem., 7 mm Rem. Mag., .308 Win, .30-06 Sprg., .300 Win. Mag., .338 Win. MAg., 7x64 mm.

Browning introduced Acera in 1999. It features a straight line or extended bolt action (the bolt has to be pulled backward to unlock the receiver). There are seven locking lugs on the front of the bolt. Acera has a drop down (but also removable) magazine and a barrel rib that can be unscrewed for removal with the rear sight. It is chambered for .270 Win., 7x64 mm, 7 mm Rem. Mag., .30-06 Sprg. and .300 Win. Mag. There are four mounting holes on the receiver for mounting purposes. The magazine takes four rounds (3 Magnum calibers). There are several variants on the market: Acera Elite, a deluxe version of Acera; Acera Stutzen (Hunting Carbine) and Acera Pirsch (developed especially for driven hunts). Acera Stutzen was made for 7x64 mm, .30-06 Sprg. and .300 Win. Mag., while Acera Pirsch was chambered for 7x64mm, .30-06 Sprg. and .300 Win. Mag. The action of Acera is cylindrical and of the same diameter throughout its entire length.

Browning Maral is a straight-pull bolt-action rifle – the user has to pull the bolt to eject the fired case and then simply release it. The bolt will return to its place, chambering a new cartridge in the process. Repeating is quick and simple. Maral features a cocking/de-cocking safety switch. Barrel length is 56 cm and weight is approx. 3.2 kg (depending on the model and caliber). Browning chambers this rifle for .308 Win., .30-06 Sprg., .300 Win. Mag. and 9.3x62. The magazine is detachable and hold 4 (standard) or 3 calibers (magnum). For mounting purposes, there are two bores at the front and at the rear of the receiver, 4 altogether.

Rifles Benelli Argo, Browning BAR, Browning Acera, Browning Maral, Winchester SXR Vulcan and Fabarm Iris have actions of the same dimensions, which is why they share the same mounts.

A: 12.7 mmB: 81 mmC: 12.7 mmBHU: 0 mmFi: 6-48R1: R18R2: R18

Mounting instructions

Remove all the stains (grease, oil etc.) from the rifle's receiver with a cleaning fluid (acetone). Once the surface is clean and dry, check whether the screws match the rail and the holes on the receiver. Make sure that the Picatinny rail is compatible with the the rifle by inspecting the mounting holes on both. Before mounting the rail permanently, apply a minimal amount of thread-locking fluid 278 or 648 on screws and contact surfaces. Be careful not to get the fluid in or near the mounting holes. Carefully clean the remaining excess fluid around the rail with a cleaning fluid. Using a torque driver, screw the screws appropriately (up to 2.2 Nm) – do not overtighten.

A, B and C markings refer to the distances between holes on the rail/mount. A is the distance between the front two holes on the rail/mount.

12.7 mm

B

A, B and C markings refer to the distances between holes on the rail/mount. B is the distance between the holes in the middle (usually, that is the distance between the 2nd and 3rd hole on the rail/mount).

81.0 mm

C

A, B and C markings refer to the distances between holes on the rail/mount. C is the distance between the rear two holes on the rail/mount.

12.7 mm

BH height

BH stands for Bauhöhe (ger.) which means overall height. It is measured from the mounting surface of the rifle to the lower surface of the riflescope's tube.

7 mm

Inclination

Often, the elevation adjustment that the riflescope offers is not adequate to compensate for the bullet drop when shooting at long range. When the riflescope runs of out of elevation, a mount with an inclination is needed. 20 MOA is the most common inclination. With it, the user gains 58.2 cm / 100 m of additional elevation range when shooting at the range of 100 m. This is approx. 5.8 Mrad of elevation.